Chair



G. F. CONNERAND r.. w. DOVEg cHAm. ji APPLtcATloN miao UME s. 1919.v

1,361,446. Patented Dee. 7,1920.

3mm/whoa @Woxfc @mmm mv/ QsuWA/WWVLW mov@ G. F. CONEII AND I. w. uoI/I-:I

CHAIR.

APPLICATION FILED JUNE 5. 19mA Patented De@ 7, 1920 3 SHEETS-SHEET 2 G. F. CONNER AND 1. W. novia.A

CHAIR.

APPLICATION FILED JUNE 5, 1919.

1,361,446.. Patented Dee. 7,1920.

3 SHEETS-SHEET 3.

5%' .11. fg l hesitate.

- and JOSEPH' VVILBUR DovE, citizens of the -have invented a new of' which the following is a specification.

T his invention relates to adjustable re' rares. Pararcnam. i

To all wlw/ni, it may concern Be it known that we, GEORGE F. CONNER United States, and residing at Port Huron, county of St. Clair,` and vState of Michigan, and improved Cha-ir,

clininghairs especially adapted for use by physicians, dentists and barbers, and its object is to provide a' `chair which may be raised by means of mechanical means and in which the back may/ be positioned by similar means; which chair may have its seat Tin sections so that one section may be swung up -and back above the othersection; which will have a readily adjustable foot rest, and to which may be pivotally attached an arm bearing a cabinet and a seat for the operator. It is essential that the controlling mechanism Vfor the chair adjusting means shall be so positioned andthe auxiliary seat be so mounted that the operator can manipulate the controlling mechanism without leav z ing his seat. By having the controlling mechanism convenient to'the operator vit becomes unnecessary for him to leave his seat when he Wishes to adjust the chair.v

rl`his invention consists in achair adapted to be liftedand to have the position of its Vback 'controlled byfmechanical means, in

combination jvvith controlling devices for said mechanical means whereby the action of said means may be limited. It more specilically consists in a chair mounted on 'arotatable plunger slidable' in a vertical cylinder and adapted .to-be lifted by liquid admitted by a foot-controlled valve from any source of liquid under pressurea tilt able back for the chair, a second cylinder mounted under thefjseat of the chair and a piston therein to position the back, the liquid :tor actuating the piston passing up through the plunger that raises the chair. It also consists in forming the seat in;sections, one of which is movablerelative to the other so 'that it may be swung up to serve as a seat for a child. lt also consists in pivoting an upwardly curved arm on the base supporting the chair and in mounting -a small seat on said arm so that the operator may malle use thereof at any desired point.

the arm to carry the supply fand Waste pipes Specification of Letters Patent.

It also' consists in adjustably mounting an electric for said basin, said basin being adjustable on the arm. 'It also consists in the details pointed out in away to show the interior construction. Fig

3 is a central vertical section of thebase of the chair and of thehydraulic cylinders.

vFig. 4 is a section onthe line 4--4 of Fig.

Fig. 5 is a section on the line '5--5 of Fig. 4. Fig. 6 is an inside elevation of a portion of the chair frame. Fig. 7 is a side elevation ofthe chair with a portion of the seat swung up. Figs. 8, 9 and 10 are sections on the lines 8 8, 9%-9 and 10-10 of Fig. 1, re-` spectively. Fig. 11 is a section on the line ii-ii of rig. e.

`Similar reference characters refer to like parts throughout the several views.

The base 1 of this chair is preferably in-y tegral with the cylinder 2 in which the piss 4ton Sis vertically' movable. The side frames of the seat are" rigidly connected to this plunger and move up and down7with it.

The diameter of the cylinder is large so that a comparatively light water pressure is suficient to raise the plunger and chair, and

we preferto use a valve such afs shown in Fig. 5 to control the iioyv of water from the usual city mains through the pipes 5 and 6 to the bottom of this cylinder. rlhe valve body 7 also receives \the upper end of a waste pipe '8 and has a three-way plug 9 to connect the pipe 6to either the supply pipe 5 or waste pipe 8. At the rear end of this plug is an yarm 10 to which a tube 12 is conf nected and within which tube is slidable a rod 13 connected to the collar 1d on the piston 3. The upper end of the tube 1Q is nearlylplosed so that when the button 15 at the loiv'er end of this rod reaches the upper end of this tube, the tube .will be moved up with this rod and turn the plug 9`to cut oft the flow iro'm the pipe 5. vThis prevents the plunger being pushed entirely out of the cylinder. At the iront end of this plug 9 -is a double lever 16 vv/hichA may be swung Patented nee. a', 192e. Applicatonled .Tune 5; 1919. Serial No. 302,037. i I

by the feet of the operator to turn the plug. The chair may therefore b e swuIi-g\aroind g at Iwill andbe caused to risefpr lcvv'er at wilh The sides 4 of the frame of the -elitair may\1l0 connect to a cross head 19 at the top of the piston 3. Each side has secured to it the back 22 is supported through the medium of pins 23 and rollers 24 thereon which are movablein these guides. f A cross bar 25 at the bottom of the back (Fig. 3) is shown provided with lugs 26 which receive the pin 27 which extends through one end of the connecting rod 28. y

Mounted at the upper end of the piston 3 between the sides 4 is a second cylinder 30 having a piston 31 which carriesa pin 32 on which the connecting rod ,is mounted. A passage 33 in the wall of this cylinder connects to the interior of the piston 3 which is slidable on the tube 34. A stuffing box 35 prevents leakage around this tube 34 which connects into vthe base 1 to register with the passage 36 (Fig. 4). A pipe 37 also connects to this passage and a valve 38 operatedby a double foot level1 39 controls the liow of water into and out of the Acylinder 30. i The feed and waste'pipes which connect to this valve and the plug/therein may be similar to those shown .in Fig.

lVhen water is admitted'to the cylinder 30, v

the piston 31 will 4slide the back 22 to upright position, but when the water is permitted to flow awayfthe back will slide down to almost horizontal position as indicated by dotted lines in Fig. 1.

Slidable between the side frames 4 of the chair is a seat base comprising a bottom 41, sides 42 having ribs 43 to fit into the guides 21, and u-pwardly extending brackets 44. A seat is carried by this frame-and prefer-` ably consists of 'two parts 45 and 46, the latter being connected to the sides 42 by' means of links 47 which permit the seat 46 to be swung up to the position shown in Fig.

47 where it may be used by a child whose feet rest on the bottom 41.

r1`he brackets 44 carry pins 48 which pass through the slots 49.in the foot-rest supports 50. The chair arms 52 connect to the pins 53 on the sides and to pins 54 at the upper ends of the supports 50. Then the parts are in normal position the supports 50 will be almost vertical, but when the seatl base is slid forward as shown in dotted lines in Fig. 1, the foot-rest 56 at the outer ends f y. with piiis to` pivot this endl on the base 1` and in the bracket 66 attached'to the cylinder 2. Eiitending up through the basel and through a slot in the base 67 of the en larged end 65 of the arm 60 are' three risers 68a, 69a and .70, connecting to the pipes 68, 69 and 70 respectively by means of knuckles 68h, 69b and 70h which are all -on the same vertical central line with the trunnions of the enlarged end 65. VThese pipes convey hot and cold `water ,to the basin`72 and carry off the waste water. The bracket 73 for the basin'is preferably also the upper end of the waste pipe. f

An electric light cable 74 may extend into this enlarged end 65rof the arm 60 and to the lamp 75 on the bracket 76 on the cabi-V net. The operator may therefore sit on his auxiliary seat 64 which he may swing at will and have vat hand his instruments and erating the valve and he can also control the back by operating the other valve.

The proportions and details of this chair and its accessories may all be changed by those' skilled in the art without departing from the spirit of our invention as set forth in' the following claims. y

Te claim A 1. Ina chair, the combination of a base and a chair pivotally mounted thereon and comprising a seat frame and a back, means to cause'the chair to rise or lower at will, and means to cause the back to move to upright position and topermit it to move to reclining position. ,I y I 2. In a -chair, the combination of a base and a vertical cylinder thereon, a piston mounted in the cylinder and means to control the height of the piston inthe cylinder, a chair frame connected to the upper end of the piston and comprising parallel sides having guides in their opposing faces, a seat slidably mounted in said guides, a back slidably supported by said guides, so it may move from upright to' reclining position, and means to move the back to upright position, said cylinder and piston embodying means to control the said means to move said back; v i

3. In a chair, the combination of a base and a vertical cylinder thereon, a piston mounted in the cylinder and means to control the height of the piston in the cylinder, a chair frame connected to the upper end-of the piston and comprising parallel sides having guides 1n their opposing faces, a

seat, slidably mounted in said guides, a'back slidably supported by said guides, so it may move from upright to reclining position, and means to move the back to upright posi'- tion, said means comprising a hydraulic cylinder and a piston connected to said back, saidyyvertical piston and cylinder constituting passages for the liquid vfor the second piston and cylinder.

.4. In a chair, the combination of a base and a vertical cylinder thereon, a piston mounted in the cylinder and meanisfto control the height of thepiston in the cylinder, a chair frame connected to the upper end of the piston and comprising parallel sides having guides in theirl opposing faces, a seat slidably mounted in said guides', a back slidably supported by said guides, so it may move from upright to reclining position,

and means to' move the back to upright position, said means-f comprising ahydraulic cylinder and a piston connected to said back, said first named piston and the wall of the second named cylinder being formed with passages for the liquid that actuates ported in said guides, a plston slldable inthe piston connected to said back.

'- 5. In a chair, the combination of a base and a vertical cylinder thereon, a hollow piston mounted in said cylinder and means to control the height of the cylinder in the piston, a horizontal cylinder mounted on the piston, a chair frame mounted onthe piston to inclose the horizontal cylinder and comprising sides provided with guides in their opposed faces,a seat back slidably supported in said guides, a piston slidable in said horizontal cylinder, means connecting the horizontal piston to the seat back, and

-means to control the -flow 01- water to the horizontal cylinder, said vertical piston and -cylinder constituting passages for the liquid for the second piston and cylinder.

6. In a chair, the combination of a base anda vertical cylinder thereon, a hollow piston mounted in said cylinder and means to control the height of the cylinder in the piston, a horizontal cylinder mounted on the piston, a chair frame mounted on the piston to inclose the horizontal -cylinder and comprisingsides provided 'with guides in their opposed faces, a seat back slidably supsaid horizontal cylinder, means connecting the'horizontal piston to the seat back, said vertical piston and the wall of'the horizontal piston being formed with a passage for water under pressure, a pipe extending through the base and centrally up into said vertical piston, and a valve connected to said pipe to control .the How ofl water therein. y

'7. In a chair, the combination of an adjustable. back, a seat frame, a seat formed of two sections, a pair of links on each side f the seat pivoted'to said seat frame and to oneJ of the sections so as to permit said seetion to be swung up and against said back wherever it may be positioned, said links supporting said section in its elevated position.

8. In a chair, the combination of a base and a chair mounted thereon to swing on a vertical axis and having two side frames provided with guides in their opposite faces, a seat frame slidable in said guides and having upwardly extendingbrackets at its forward corners provided with horizontal pins,

a pair. of bars having longitudinal slots t'o receive the pins, a foot-rest connecting the lower ends of said bars, and arm rests connecting to the upper ends of said bars and to the back ends of the side frames.-

9. In a chair, the combination' of an adn justable back, and a -seat formed of two sections, one of which is adapted tobe 

